The running coupling of 8 flavors and 3 colors

Fodor, Zoltan; Holland, Kieran; Kuti, Julius; Mondal, Santanu; Nogradi, Daniel; Wong, Chik Him

doi:10.1007/JHEP06(2015)019

Title: The running coupling of 8 flavors and 3 colors

Journal Article · Thu Jun 04 00:00:00 EDT 2015 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP06(2015)019· OSTI ID:1454831

Fodor, Zoltan ^[1]; Holland, Kieran ^[2]; Kuti, Julius ^[3]; Mondal, Santanu ^[4]; Nogradi, Daniel ^[4]; Wong, Chik Him ^[5]

Univ. of Wuppertal (Germany). Dept. of Physics; Julich Supercomputing Center, Julich (Germany); Eotvos Univ., Budapest (Hungary). Inst. for Theoretical Physics
Univ. of the Pacific, Stockton, CA (United States)
Univ. of California, San Diego, CA (United States)
Eotvos Univ., Budapest (Hungary). Inst. for Theoretical Physics; MTA-ELTE Lendulet Lattice Gauge Theory Research Group, Budapest (Hungary)
Univ. of Wuppertal (Germany). Dept. of Physics

We compute the renormalized running coupling of SU(3) gauge theory coupled to N_f = 8 flavors of massless fundamental Dirac fermions. The recently proposed finite volume gradient flow scheme is used. The calculations are performed at several lattice spacings allowing for a controlled continuum extrapolation. The results for the discrete β-function show that it is monotonic without any sign of a fixed point in the range of couplings we cover. Finally, as a cross check the continuum results are compared with the well-known perturbative continuum β-function for small values of the renormalized coupling and perfect agreement is found.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0009919

OSTI ID:: 1454831

Journal Information:: Journal of High Energy Physics (Online), Vol. 2015, Issue 6; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 24 works

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